Abstract: An object of the present invention is to provide a silver halide photographic material having improved antiblocking property without deterioration of film brittleness and image quality due to addition of a polymer latex.A silver halide photographic material having at least one silver halide emulsion layer and at least one nonsensitive protective layer on a support, in which the nonsensitive protective layer contains polymer grains represented by the following General Formula (1) in a proportion by weight of 5 to 300% to a hydrophilic colloid as a binder, and the polymer grains have a mean grain diameter of at most 0.1 .mu.m,--(A).sub.x --(B).sub.y --(C).sub.

Abstract: Disclosed is a silver halide photographic material which comprises a monodispersed polymer having an average grain size of from 1 to 10 .mu.m and variation coefficient of 0.10 or less and having a functional group which forms a covalent bond by reacting with an organic hardening agent or gelatin. Preferably, the polymer is a polymer obtained by polymerization by adding to a hydrophilic organic solution a high molecular weight dispersant which is dissolved in the hydrophilic organic solution and further adding at least one vinyl monomer which is dissolved in the hydrophilic organic solution but the polymer to be formed is precipitated from the hydrophilic organic solution. More preferably, the polymer contains 60 wt % or more of the repeating unit derived from methyl methacrylate and has a glass transition point of 60.degree. C. or more.

Abstract: An aqueous dispersion of core/shell type composite particles having colloidal silica as the cores and having an organic polymer as the shells is disclosed, comprising an aqueous dispersion of particles obtained by carring out a reaction operation of coupling reacting (a) colloidal silica and (b) an organoalkoxysilane in an aqueous medium in the presence of a dispersion stabilizer and thereafter polymerizing the coupling reaction product and (c) a vinyl monomer having at least one ethylenically unsaturated group, and further a method for producing the aqueous dispersion is disclosed.The aqueous dispersion has a good dispersion stability, by-produces less polymer sole particles, and a high coating degree of a polymer on the surfaces of the silica particles.

Abstract: There is disclosed a particulate photographic polymer, which at least comprises a repeating unit of the formula (I): ##STR1## wherein R is an alkyl group, a phenyl group, or a hydrogen atom; L is a divalent organic binding group; A is a repeating unit derived from at least one ethylenically unsaturated monomer, or a repeating unit derived by ring opening polymerization of a nitrogen-containing heterocyclic compound, with --(A).sub.m -- being soluble in water or a hydrophilic organic liquid; m is from 2 to 200; and Y is a monovalent binding group. The polymer is excellent in dispersion stability in coating solutions, prevents settling and agglomeratingis and the formation of mat pinholes, and can improve granularity of images.

Abstract: A silver halide photographic material comprises a silver halide emulsion layer and an anticurl backing layer provided on a support. A surface backing layer is further provided on the anticurl backing layer. The surface backing layer comprises a hydrophobic polymer. The hydrophobic polymer has a repeating unit represented by the formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl group; X is --COO--, --CONR.sup.3 -- or phenylene; R.sup.3 is hydrogen or an alkyl group; R.sup.2 is a single bond or an alkylene group; L is a single bond or a divalent linking group, --OCO--, --NHCOO--, --OCOCH.sub.2 --, --NHCONH--, --NHCO--, --NH-- or --O--; and Cy is an alicyclic group consisting of a monocyclic ring and having three to sixteen carbon atoms.

Abstract: A silver halide photographic material comprising a silver halide emulsion layer and a hydrophobic backing layer provided on a support. The hydrophobic backing layer is formed by coating core/shell polymer particles. The core comprises a cross-linked polymer. The shell comprises an essentially not cross-linked polymer.

Abstract: Disclosed is a uniaxially stretched birefringent film having a negative birefringence, comprising a graft polymer which is obtained by grafting, through addition-polymerization, at least one monomer selected from styrene and derivatives thereof to a polymer having an unsaturated double bond. The liquid crystal display provided with the birefringent film is also disclosed.

Abstract: A cationic high-molecular weight compound is represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom or C.sub.1-6 lower alkyl group; L.sup.1 represents --COO-- or --CONH-- and L.sup.2 represents a divalent group; J represents a C.sub.1-20 alkylene group or C.sub.7-20 aralkylene group; R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represents a C.sub.1-20 alkyl group or C.sub.7-20 aralkyl group; X.sup.

Abstract: A photographic element comprising a support having thereon at least one layer comprising a polymer obtained by copolymerizing a repeating unit represented by the following general formula (I) and a copolymerizable cellulose derivative represented by the following general formula (II):--A).sub.x (B).sub.y (I)wherein A represents a repeating unit derived from an ethylenically unsaturated monomer having --COOH group, --SO.sub.3 H group or --PO(OH).sub.2 group in the molecular structure; and B represents a repeating unit derived from a copolymerizable ethylenically unsaturated monomer; ##STR1## wherein (R.sup.1)s each independently represents (i) a hydrogen atom, (ii) a monovalent organic bonding group such as an ester group or an ether group or (iii) a monovalent organic bonding group represented by the following general formula (III), with the proviso that (R.sup.1)s do not all hydrogen atom at the same time; and n represents a number of 20 to 800; ##STR2## wherein R.sup.

Abstract: A photographic element comprising a polymer mordant containing a repeating unit containing a tertiary amino group or a quaternary ammonium salt and at least one reprating unit represented by the formula (I) or (II): ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms R.sup.2, R.sup.3, R.sup.4 and R.sup.5, which may be the same or different, each represent an alkyl group or substituted alkyl group; R.sup.6, R.sup.7, and R.sup.8, which may be the same or different, each represent hydrogen, an alkyl group or a substituted alkyl group; R.sup.11 represents an alkyl group, a substituted alkyl group, an alkoxy group, a substituted alkoxy group, an acylamino group or a halogen atom; R.sup.12 and R.sup.13, which may be the same or different, each represent an alkyl group or a substituted alkyl group; L.sup.1 and L.sup.

Abstract: A diffusion transfer photographic film unit comprising a support having thereon outwardly from said support (a) a dye image receiving layer; (b) a first peeling layer containing a copolymer of at least (i) an ethylenically unsaturated monomer containing at least one hydrocarbon group containing from 7 to 18 carbon atoms, and (ii) an ethylenically unsaturated monomer, the homopolymer of which is soluble in water or an aqueous alkaline solution; (c) a second peeling layer containing a cellulose ester; and (d) a light-sensitive silver halide emulsion layer containing a light-sensitive silver halide and a dye image forming substance. The diffusion transfer photograph produced using the unit of the invention has stable peeling properties, is not sticky, and is excellent in scratch resistance.